Photodisintegration of 9 Be through the 1/2 + state near neutron threshold and cluster dipole resonance below giant dipole resonance was measured with quasi-monochromatic γ-ray beams produced in the inverse Compton scattering of laser photons. The cross section for the 1/2 + state is revisited, being consistent with the 2001 data. The cross section for the cluster dipole resonance is consistent with the cluster dipole sum-rule which however degenerates for the two-body (n-8 Be) and three-body(n-α-α) configurations.

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Photoneutron cross sections were measured for the seven stable samarium isotopes 144,147,148,149,150,152,154 Sm near the neutron threshold with quasi-monochromatic laser-Compton scattering γ rays. Our photoneutron cross sections are found to be low by 20%-37% relative to existing data. The photoneutron data are analyzed with the TALYS reaction code by considering the Skyrme Hartree-Fock-Bogoliubov (HFB) plus quasiparticle random phase approximation (QRPA) model and the axially symmetric deformed Gogny HFB plus QRPA model of the E1 γ -ray strength. Using the γ -ray strength function constrained by the present photoneutron data, we made a thorough analysis of the reverse (n,γ ) cross sections including the radioactive nucleus 151 Sm with a half-life of 90 yr. The radiative neutron capture cross section for 153 Sm with the half-life of 1.928 d is deduced with the γ -ray strength function method.